package first;
interface area{
    double getarea();
    double p=3.14;
}


public class Main {
    public static void main(String[] args) {
        round y = new round();
        y.r = 10;
        System.out.println(y.getarea());
        rectangle r= new rectangle();
        r.len=32.4;
        r.wide=17.3;
        System.out.println(r.getarea());
    }
    
}